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,A. M. JEWELL, Decd.

E. C. FLAG", Administrator.

BORING MACHINE.

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BORING MACHINE.

Patented May 5, 1891.

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E. G. FLAGG, Administrator. BORING MACHINE;

No. 451,594 Patented May 5, 1891,

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AMMI M. JEIVELL, OF SAN FRANCISCO, CALIFORNIA; EDIVIN C. FLAGG ADMINISTRATOR OF SAID AMMI M. J'EIVEIIL, DECEASED.

BORING-MACHINE.

:SBPECIFICATION forming part of Letters Patent No. 451,594, dated May 5, 1891.

Application filed June 24,1890. Serial No. 356,552. (No model.)

To wZZ whom it may concern:

Be it known that I, AMMI M. J EWELL, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Boring- Machines; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to the general class of boring-machines, and particularly to a machine for boring the stiles of doors, blinds, and sashes.

The object of my invention is to provide a suitable machine for boring holes in such stiles, whereby they are adapted to receive dowel-pins, which are also let into holes in the rails of the doors, blinds, and sashes, whereby these articles are put together by dowels instead of mortises and tenons.

My invention consists in the novel constructions and combinations hereinafter fully described, and specifically pointed out in the claims.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a plan of my boring-machine. Fig. 2 is a side view of same. Fig. 3 is a vertical cross-section and end elevation.

A is the frame of the machine, provided with cross-bars a on its top. Upon these cross-bars is mounted and adapted to slide laterally a carriage B, upon which are mounted the rotary shafts O of the angers D. Each shaft carries two angers, one at each end.

The anger at one end is right-hand threaded and the anger at the other end is left-hand threaded. These angers are in sufficient numbers and are located upon the carriage in proper places to bore the necessary number of holes in the stiles. The auger-shafts are mounted in sliding boxes E upon the carriage, whereby the angers may be adjusted to proper place.

Upon each side of the frameA are the seats a with guides F, which receive the stiles represented by G. These stiles are clamped in place by means of swinging cam or eccentric arms H, adapted to be pressed down upon them, said arms being operated by means of a rail I, connecting them. The operation of these parts is as follows: A stile is placed upon the seat and against the guide F at each side of the machine. The carriage is moved overto one of the stiles and the angers are set in motion. They thus are fed up to and bore into the stile to the proper depth. lVhen this operation is complete, the carriage is moved over to the other side, whereby the first angers are withdrawn from the first stile, and the second set of angers are carried over to the other stile and bore the holes in it. Thus the operation is continued, boring holes first in one stile and then in the other stile.

The vibrating carriage has its movement imparted to it by the following mechanism: Mounted in the lower portion of the frame is the power-shaft J, having upon it the usual fast and loose pulleys represented byj. Upon one end of this shaft is a worm K, which meshes with the worm-gear L upon a shaft M, which extends longitudinally of the frame The longitudinal shaft operates a crank N at each end, from which links 0 extend to heads 0 under the vibrating carriage.

The auger-shafts receive rotation by the following mechanism: Upon each shaft is a pulley P, mounted thereon upon a feather or spline, so that the shaft may slide back and forth through the pulleys, said pulleys being held in place by means of fixed standards 1) and by contact with each other. Upon the power-shaft are fixed three pulleys Q, from which belts q, affected by suitable tighteners, extend upwardly to the pulleys P of the three auger-shafts at one end. Upon the powershaft are also two pulleys R. From one of these a belt r extends to a pulley s on a crossshaftS about the middle of the frame. Upon this cross-shaft are located pulleys S, from which belts s extend to the pulleys P of the middle set of auger-shafts. From the other pulley R on the power-shaft extends a belt 7* to a shaft T at the other end of the frame. Upon this shaft are pulleys 1, from which extend belts t to the pulleys P of the angershafts at said end of the frame.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A boring-machine comprising the main frame having seats on each side for the work, the laterally-moving carriage on said frame, the power-shaft, the links 0, eonneetingwith said carriage, the gearing between the oppo site ends of the links and the power-shaft, whereby the earriage is moved,- the shaft on said carriage having adj ustablebearings, and the reversed angers in the ends of the shafts, substantially as herein described.

2. Aboring-1nael1ine eonsistingot' the main frame having the seats on each side for the work, the vibrating carriage mounted upon said frame, the shafts mounted upon the earriage and having the reversed angers at their ends, the means for vibrating the carriage, consisting of the power-shaft havin g the worm,

the longitudinal shaft having the worm-gear and cranks, and the links connecting the Cranks with the vibrating earriage, and the means for rotating the auger-shafts, consisting of the counter-shafts, the belts by which the counter-shafts are driven, the feathered pulleys on the auger-shafts, and thebelts from the power and counter-shafts to said feathered pulleys, substantially as herein described.

In witness whereof I have hereunto set my hand.

AMMI M. JEWEL'L.

Witnesses:

II. NoUnsE, II. 0. LEE. 

